Electrical data Nominal wattage 250 W / 400 W Rated wattage 250 W / 400 W Lamp current 3.0 A PFC capacitor at 50 Hz 32 µF Nominal voltage 105 V Ignition voltage 4.0 kVp;5.0 kVp Photometrical data Rated lamp efficacy (standard condition) 72 lm/W Rated luminous flux 18000 lm - 36500 lm Color rendering index Ra 92 Color temperature 5200 K (D) / 3700 K (N) Light color 5200 Rated LLMF at 2,000 h 0.92 Rated LLMF at 4,000 h 0.90 Rated LLMF at 6,000 h 0.87 Rated LLMF at 8,000 h 0.85 Rated LLMF at 12,000 h 0.81 UV protection Yes Dimensions & weight Diameter 90.0 mm Length 226.0 mm Product weight 152.00 g Temperatures & operating conditions Maximum permitted outer bulb temperature 400 °C Maximum permitted base edge temperature 250 °C Lifespan Rated lamp survival factor at 2,000 h 0.96 Rated lamp survival factor at 4,000 h 0.94 Rated lamp survival factor at 6,000 h 0.93 Rated lamp survival factor at 8,000 h 0.88 Rated lamp survival factor at 12,000 h 0.81 Lifespan B50 16000 h Additional product data Base (standard designation) E40 Design / version Coated Mercury content 18.0 mg Capabilities Dimmable No Burning position Any Enclosed luminaire required Yes Certificates & standards Energy efficiency class A Energy consumption 275 kWh/1000h Country specific categorizations ILCOS ME/UB-250/952-H/E/SL-E40-91/226